What objective does Anycast DNS serve?

What is the aim of Anycast DNS?

Anycast DNS is an extra service that you can find from DNS providers. It is a helpful traffic-routing system that delivers website material very quickly. That is made feasible by the multiple nameservers that keep a specific similar IP address.

Each of these servers is positioned in a different location to be closer to the possible users. The user experience is enhanced, and DNS query replies are significantly quicker as a result. The closest and most accessible server will fulfill the user’s request. As a result, your customers won’t have to wait long to access and browse your website thanks to the Anycast DNS service, which almost eliminates latency.

How does it operate?

A device that is connected to the Internet communicates with a server by using its IP address. The most basic kind of communication is one-on-one interaction. It’s alright, and there’s a possibility that DNS resolution will function. However, if only one server has the required information, individual requests will have to travel quite far to reach it (A or AAAA record). The user won’t receive the desired response if the server is down. There won’t be a response to the query.

Advantages of implementing Anycast DNS

  • Improved uptime A server could crash, but there is a very slim probability that several servers would crash simultaneously. Therefore, your website will have enhanced uptime and be accessible at all times to your users.
  • Quicker reaction time. The waiting period is significantly reduced when your servers respond quickly. Few potential customers will leave your website.
  • Position in search results. The user experience includes things like loading times and response times. Search engines do not ignore these variables when determining how to rank your website.
  • Increased safety. If one of them is compromised, you can rely on other servers.

Is Anycast DNS appropriate for CDN (Content Delivery Network) use?

Yes, Anycast DNS is ideal for CDNs because it responds faster to queries and can route traffic to a local webserver.

Consider this network: you have visitors from three continents: North America, Asia, and Europe. You have made three copies of your website (3 web servers with 3 different IP addresses). You’ve set up Anycast DNS servers on each continent, so all traffic in North America goes to the webserver there, traffic in Asia goes to the Asian server, and so on for Europe.

Due to two factors, the CDN will significantly reduce latency. First, the Anycast DNS servers that are closer to the customers will be the first. They will both be in the same country and on the same continent. It won’t take long to resolve the domain.

The numerous copies of the site make up the CDN’s second component. You can divert visitors to a nearby web hosting and respond to domain name queries more quickly.

The two work well together to give your users a wonderful experience. In addition, they will encounter a lot less latency than if the nameservers and web servers were located on a different continent.


What do you currently think about Anycast DNS? It undoubtedly has benefits and can significantly increase network performance. Additionally, it is practical for scaling and simple to set up. Definitely, a tech you need to look at!

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